lkml.org 
[lkml]   [2021]   [Nov]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: [RFC PATCH v3 26/59] KVM: x86: Introduce vm_teardown() hook in kvm_arch_vm_destroy()
    Date
    On Wed, Nov 24 2021 at 16:20, isaku yamahata wrote:
    > Add a second kvm_x86_ops hook in kvm_arch_vm_destroy() to support TDX's
    > destruction path, which needs to first put the VM into a teardown state,
    > then free per-vCPU resource, and finally free per-VM resources.
    >
    > Note, this knowingly creates a discrepancy in nomenclature for SVM as
    > svm_vm_teardown() invokes avic_vm_destroy() and sev_vm_destroy().
    > Moving the now-misnamed functions or renaming them is left to a future
    > patch so as not to introduce a functional change for SVM.

    That's just the wrong way around. Fixup SVM first and then add the TDX
    muck on top. Stop this 'left to a future patch' nonsense. I know for
    sure that those future patches never materialize.

    The way it works is:

    1) Refactor the code to make room for your new functionality in a
    way that the existing code still works.

    2) Add your new muck on top.

    Anything else is not acceptable at all.

    Thanks,

    tglx

    \
     
     \ /
      Last update: 2021-11-25 20:52    [W:4.102 / U:0.064 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site